After four winning years as the boys’ varsity lacrosse coach at Norwell High School, Chris McGuirk will probably not be back for the spring 2014 season.

The decision by the school administration not to renew McGuirk’s contract has puzzled some Norwell parents and angered others—so much so that a number of them say they plan to attend the Nov. 18 School Committee meeting to demand answers and call for McGuirk’s reinstatement.

A Facebook page titled “Reinstate Coach Chris McGuirk” had garnered some 600 “likes” by Tuesday, and a petition asking school Superintendent Matthew Keegan to reverse his decision has also been circulating online.